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English has 11 basic color terms: black, white, red, green, yellow, blue, brown, orange, pink, purple, and gray; other languages have between 2 and 12. All other colors are considered by most speakers of that language to be variants of these basic color terms.
The RGB color model is an additive color model [1] in which the red, green, and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue. [2]
Red, blue, green and white Ghana: Red, yellow, green and black Black and white (used in sports) Guinea: Red, yellow and green Guinea-Bissau: Red, yellow, green and black Ivory Coast: Orange, white and green Kenya: Black, red, green and white Lesotho: Blue, white, green and black Liberia: Red, white and blue Libya: Red, black, green and white ...
Red versus green; Blue versus yellow; Black versus white (this is achromatic and detects light–dark variation or luminance) [3] Responses to one color of an opponent channel are antagonistic to those to the other color, and signals output from a place on the retina can contain one or the other but not both, for each opponent pair.
The other color was orange, and we went with orange because green is a keyable color," Nash says, explaining that green-screens often used for backgrounds at that time were blue or, well, green ...
The major, or primary group of colors consists of the sequence of white, red, black, yellow, and violet (mnemonics Why Run Backwards, You'll Vomit). [3] The minor, or secondary color is chosen from the sequence blue, orange, green, brown, and slate (mnemonics B ell O perators G ive B etter S ervice [ 4 ] ).
He thus argued that the red–green and blue–yellow cells should be instead called green–magenta, red–cyan and blue–yellow complementary cells. An example of the complementary process can be experienced by staring at a red (or green) square for forty seconds, and then immediately looking at a white sheet of paper.
This model designates red, yellow and blue as primary colors with the primary–secondary complementary pairs of red–green, blue-orange, and yellow–purple. [2] In this traditional scheme, a complementary color pair contains one primary color (yellow, blue or red) and a secondary color (green, purple or orange).